Question about 2003 Ford F150 Regular Cab

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Heater/ac flap on 2003 f 150 won't move---stays on defrost all time

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MOST LIKELY A VACUUM PROBLEM .. UNDER THE HOOD NEAR THE A/C RECIEVER DRYER LOCATE THE VACUUM HOSE THAT GOES INSIDE THE CAB . CHECK FOR VACUUM ON IT WITH ENGINE RUNNING. IF NO VACUUM CK THE ENGINE VACUUM HOSE HARNESS BACK TO THE ENGINE AND TO THE VACUUM RESERVOIR. . CORRECT ANY ENGINE VACUUM LEAKS FIRST. THEN CK INSIDE ON PASSENGER SIDE LOWER DASH FOR VACUUM HOSE CONNECTOR CONNECTION THERE SHOULD BE VACUUM ON BLACK HOSE .

Posted on Aug 06, 2010

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Posted on Jan 02, 2017

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I have a 1996 Ford e-350 class c motor home. My problem is the ac/heater controller is not working correctly, it stays on defrost mode all the time, no matter were you put the lever.


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